Need to control temperature for a DIY project, incubator, fermentation chamber, or aquarium heater? This little XH-W1209 module is your friend. It runs on 12V DC, has a bright digital display, and uses a simple push-button interface to set your desired temperature. The built-in 10A relay can switch a decent load (like a heating pad or fan) on and off automatically to keep things at the right temp. Comes with a plug wire for the temperature sensor probe. Super easy to use: hook up power and your load, press SET, adjust the temp with the + and - buttons, and you're done. An LED shows when the relay is active. If the display shows 'LL' the sensor might be disconnected; 'HH' means it's in high-temp safety shutdown. A versatile, affordable brain for any temperature-sensitive project.
